export var regeneratorRuntime = (function (exports) {
	'use strict'
  
	var Op = Object.prototype
	var hasOwn = Op.hasOwnProperty
	var undefined // More compressible than void 0.
	var $Symbol = typeof Symbol === 'function' ? Symbol : {}
	var iteratorSymbol = $Symbol.iterator || '@@iterator'
	var asyncIteratorSymbol = $Symbol.asyncIterator || '@@asyncIterator'
	var toStringTagSymbol = $Symbol.toStringTag || '@@toStringTag'
  
	function wrap(innerFn, outerFn, self, tryLocsList) {
		// If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
		var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator
		var generator = Object.create(protoGenerator.prototype)
		var context = new Context(tryLocsList || [])
  
		// The ._invoke method unifies the implementations of the .next,
		// .throw, and .return methods.
		generator._invoke = makeInvokeMethod(innerFn, self, context)
  
		return generator
	}
	exports.wrap = wrap
  
	// Try/catch helper to minimize deoptimizations. Returns a completion
	// record like context.tryEntries[i].completion. This interface could
	// have been (and was previously) designed to take a closure to be
	// invoked without arguments, but in all the cases we care about we
	// already have an existing method we want to call, so there's no need
	// to create a new function object. We can even get away with assuming
	// the method takes exactly one argument, since that happens to be true
	// in every case, so we don't have to touch the arguments object. The
	// only additional allocation required is the completion record, which
	// has a stable shape and so hopefully should be cheap to allocate.
	function tryCatch(fn, obj, arg) {
		try {
			return { type: 'normal', arg: fn.call(obj, arg) }
		} catch (err) {
			return { type: 'throw', arg: err }
		}
	}
  
	var GenStateSuspendedStart = 'suspendedStart'
	var GenStateSuspendedYield = 'suspendedYield'
	var GenStateExecuting = 'executing'
	var GenStateCompleted = 'completed'
  
	// Returning this object from the innerFn has the same effect as
	// breaking out of the dispatch switch statement.
	var ContinueSentinel = {}
  
	// Dummy constructor functions that we use as the .constructor and
	// .constructor.prototype properties for functions that return Generator
	// objects. For full spec compliance, you may wish to configure your
	// minifier not to mangle the names of these two functions.
	function Generator() {}
	function GeneratorFunction() {}
	function GeneratorFunctionPrototype() {}
  
	// This is a polyfill for %IteratorPrototype% for environments that
	// don't natively support it.
	var IteratorPrototype = {}
	IteratorPrototype[iteratorSymbol] = function () {
		return this
	}
  
	var getProto = Object.getPrototypeOf
	var NativeIteratorPrototype = getProto && getProto(getProto(values([])))
	if (NativeIteratorPrototype &&
        NativeIteratorPrototype !== Op &&
        hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
		// This environment has a native %IteratorPrototype%; use it instead
		// of the polyfill.
		IteratorPrototype = NativeIteratorPrototype
	}
  
	var Gp = GeneratorFunctionPrototype.prototype =
      Generator.prototype = Object.create(IteratorPrototype)
	GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype
	GeneratorFunctionPrototype.constructor = GeneratorFunction
	GeneratorFunctionPrototype[toStringTagSymbol] =
      GeneratorFunction.displayName = 'GeneratorFunction'
  
	// Helper for defining the .next, .throw, and .return methods of the
	// Iterator interface in terms of a single ._invoke method.
	function defineIteratorMethods(prototype) {
		['next', 'throw', 'return'].forEach(function(method) {
			prototype[method] = function(arg) {
				return this._invoke(method, arg)
			}
		})
	}
  
	exports.isGeneratorFunction = function(genFun) {
		var ctor = typeof genFun === 'function' && genFun.constructor
		return ctor
			? ctor === GeneratorFunction ||
          // For the native GeneratorFunction constructor, the best we can
          // do is to check its .name property.
          (ctor.displayName || ctor.name) === 'GeneratorFunction'
			: false
	}
  
	exports.mark = function(genFun) {
		if (Object.setPrototypeOf) {
			Object.setPrototypeOf(genFun, GeneratorFunctionPrototype)
		} else {
			genFun.__proto__ = GeneratorFunctionPrototype
			if (!(toStringTagSymbol in genFun)) {
				genFun[toStringTagSymbol] = 'GeneratorFunction'
			}
		}
		genFun.prototype = Object.create(Gp)
		return genFun
	}
  
	// Within the body of any async function, `await x` is transformed to
	// `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
	// `hasOwn.call(value, "__await")` to determine if the yielded value is
	// meant to be awaited.
	exports.awrap = function(arg) {
		return { __await: arg }
	}
  
	function AsyncIterator(generator) {
		function invoke(method, arg, resolve, reject) {
			var record = tryCatch(generator[method], generator, arg)
			if (record.type === 'throw') {
				reject(record.arg)
			} else {
				var result = record.arg
				var value = result.value
				if (value &&
              typeof value === 'object' &&
              hasOwn.call(value, '__await')) {
					return Promise.resolve(value.__await).then(function(value) {
						invoke('next', value, resolve, reject)
					}, function(err) {
						invoke('throw', err, resolve, reject)
					})
				}
  
				return Promise.resolve(value).then(function(unwrapped) {
					// When a yielded Promise is resolved, its final value becomes
					// the .value of the Promise<{value,done}> result for the
					// current iteration.
					result.value = unwrapped
					resolve(result)
				}, function(error) {
					// If a rejected Promise was yielded, throw the rejection back
					// into the async generator function so it can be handled there.
					return invoke('throw', error, resolve, reject)
				})
			}
		}
  
		var previousPromise
  
		function enqueue(method, arg) {
			function callInvokeWithMethodAndArg() {
				return new Promise(function(resolve, reject) {
					invoke(method, arg, resolve, reject)
				})
			}
  
			return previousPromise =
          // If enqueue has been called before, then we want to wait until
          // all previous Promises have been resolved before calling invoke,
          // so that results are always delivered in the correct order. If
          // enqueue has not been called before, then it is important to
          // call invoke immediately, without waiting on a callback to fire,
          // so that the async generator function has the opportunity to do
          // any necessary setup in a predictable way. This predictability
          // is why the Promise constructor synchronously invokes its
          // executor callback, and why async functions synchronously
          // execute code before the first await. Since we implement simple
          // async functions in terms of async generators, it is especially
          // important to get this right, even though it requires care.
          previousPromise ? previousPromise.then(
          	callInvokeWithMethodAndArg,
          	// Avoid propagating failures to Promises returned by later
          	// invocations of the iterator.
          	callInvokeWithMethodAndArg
          ) : callInvokeWithMethodAndArg()
		}
  
		// Define the unified helper method that is used to implement .next,
		// .throw, and .return (see defineIteratorMethods).
		this._invoke = enqueue
	}
  
	defineIteratorMethods(AsyncIterator.prototype)
	AsyncIterator.prototype[asyncIteratorSymbol] = function () {
		return this
	}
	exports.AsyncIterator = AsyncIterator
  
	// Note that simple async functions are implemented on top of
	// AsyncIterator objects; they just return a Promise for the value of
	// the final result produced by the iterator.
	exports.async = function(innerFn, outerFn, self, tryLocsList) {
		var iter = new AsyncIterator(
			wrap(innerFn, outerFn, self, tryLocsList)
		)
  
		return exports.isGeneratorFunction(outerFn)
			? iter // If outerFn is a generator, return the full iterator.
			: iter.next().then(function(result) {
				return result.done ? result.value : iter.next()
			})
	}
  
	function makeInvokeMethod(innerFn, self, context) {
		var state = GenStateSuspendedStart
  
		return function invoke(method, arg) {
			if (state === GenStateExecuting) {
				throw new Error('Generator is already running')
			}
  
			if (state === GenStateCompleted) {
				if (method === 'throw') {
					throw arg
				}
  
				// Be forgiving, per 25.3.3.3.3 of the spec:
				// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
				return doneResult()
			}
  
			context.method = method
			context.arg = arg
  
			while (true) {
				var delegate = context.delegate
				if (delegate) {
					var delegateResult = maybeInvokeDelegate(delegate, context)
					if (delegateResult) {
						if (delegateResult === ContinueSentinel) continue
						return delegateResult
					}
				}
  
				if (context.method === 'next') {
					// Setting context._sent for legacy support of Babel's
					// function.sent implementation.
					context.sent = context._sent = context.arg
  
				} else if (context.method === 'throw') {
					if (state === GenStateSuspendedStart) {
						state = GenStateCompleted
						throw context.arg
					}
  
					context.dispatchException(context.arg)
  
				} else if (context.method === 'return') {
					context.abrupt('return', context.arg)
				}
  
				state = GenStateExecuting
  
				var record = tryCatch(innerFn, self, context)
				if (record.type === 'normal') {
					// If an exception is thrown from innerFn, we leave state ===
					// GenStateExecuting and loop back for another invocation.
					state = context.done
						? GenStateCompleted
						: GenStateSuspendedYield
  
					if (record.arg === ContinueSentinel) {
						continue
					}
  
					return {
						value: record.arg,
						done: context.done
					}
  
				} else if (record.type === 'throw') {
					state = GenStateCompleted
					// Dispatch the exception by looping back around to the
					// context.dispatchException(context.arg) call above.
					context.method = 'throw'
					context.arg = record.arg
				}
			}
		}
	}
  
	// Call delegate.iterator[context.method](context.arg) and handle the
	// result, either by returning a { value, done } result from the
	// delegate iterator, or by modifying context.method and context.arg,
	// setting context.delegate to null, and returning the ContinueSentinel.
	function maybeInvokeDelegate(delegate, context) {
		var method = delegate.iterator[context.method]
		if (method === undefined) {
			// A .throw or .return when the delegate iterator has no .throw
			// method always terminates the yield* loop.
			context.delegate = null
  
			if (context.method === 'throw') {
				if (delegate.iterator.return) {
					// If the delegate iterator has a return method, give it a
					// chance to clean up.
					context.method = 'return'
					context.arg = undefined
					maybeInvokeDelegate(delegate, context)
  
					if (context.method === 'throw') {
						// If maybeInvokeDelegate(context) changed context.method from
						// "return" to "throw", let that override the TypeError below.
						return ContinueSentinel
					}
				}
  
				context.method = 'throw'
				context.arg = new TypeError(
					'The iterator does not provide a \'throw\' method')
			}
  
			return ContinueSentinel
		}
  
		var record = tryCatch(method, delegate.iterator, context.arg)
  
		if (record.type === 'throw') {
			context.method = 'throw'
			context.arg = record.arg
			context.delegate = null
			return ContinueSentinel
		}
  
		var info = record.arg
  
		if (! info) {
			context.method = 'throw'
			context.arg = new TypeError('iterator result is not an object')
			context.delegate = null
			return ContinueSentinel
		}
  
		if (info.done) {
			// Assign the result of the finished delegate to the temporary
			// variable specified by delegate.resultName (see delegateYield).
			context[delegate.resultName] = info.value
  
			// Resume execution at the desired location (see delegateYield).
			context.next = delegate.nextLoc
  
			// If context.method was "throw" but the delegate handled the
			// exception, let the outer generator proceed normally. If
			// context.method was "next", forget context.arg since it has been
			// "consumed" by the delegate iterator. If context.method was
			// "return", allow the original .return call to continue in the
			// outer generator.
			if (context.method !== 'return') {
				context.method = 'next'
				context.arg = undefined
			}
  
		} else {
			// Re-yield the result returned by the delegate method.
			return info
		}
  
		// The delegate iterator is finished, so forget it and continue with
		// the outer generator.
		context.delegate = null
		return ContinueSentinel
	}
  
	// Define Generator.prototype.{next,throw,return} in terms of the
	// unified ._invoke helper method.
	defineIteratorMethods(Gp)
  
	Gp[toStringTagSymbol] = 'Generator'
  
	// A Generator should always return itself as the iterator object when the
	// @@iterator function is called on it. Some browsers' implementations of the
	// iterator prototype chain incorrectly implement this, causing the Generator
	// object to not be returned from this call. This ensures that doesn't happen.
	// See https://github.com/facebook/regenerator/issues/274 for more details.
	Gp[iteratorSymbol] = function() {
		return this
	}
  
	Gp.toString = function() {
		return '[object Generator]'
	}
  
	function pushTryEntry(locs) {
		var entry = { tryLoc: locs[0] }
  
		if (1 in locs) {
			entry.catchLoc = locs[1]
		}
  
		if (2 in locs) {
			entry.finallyLoc = locs[2]
			entry.afterLoc = locs[3]
		}
  
		this.tryEntries.push(entry)
	}
  
	function resetTryEntry(entry) {
		var record = entry.completion || {}
		record.type = 'normal'
		delete record.arg
		entry.completion = record
	}
  
	function Context(tryLocsList) {
		// The root entry object (effectively a try statement without a catch
		// or a finally block) gives us a place to store values thrown from
		// locations where there is no enclosing try statement.
		this.tryEntries = [{ tryLoc: 'root' }]
		tryLocsList.forEach(pushTryEntry, this)
		this.reset(true)
	}
  
	exports.keys = function(object) {
		var keys = []
		for (var key in object) {
			keys.push(key)
		}
		keys.reverse()
  
		// Rather than returning an object with a next method, we keep
		// things simple and return the next function itself.
		return function next() {
			while (keys.length) {
				var key = keys.pop()
				if (key in object) {
					next.value = key
					next.done = false
					return next
				}
			}
  
			// To avoid creating an additional object, we just hang the .value
			// and .done properties off the next function object itself. This
			// also ensures that the minifier will not anonymize the function.
			next.done = true
			return next
		}
	}
  
	function values(iterable) {
		if (iterable) {
			var iteratorMethod = iterable[iteratorSymbol]
			if (iteratorMethod) {
				return iteratorMethod.call(iterable)
			}
  
			if (typeof iterable.next === 'function') {
				return iterable
			}
  
			if (!isNaN(iterable.length)) {
				var i = -1, next = function next() {
					while (++i < iterable.length) {
						if (hasOwn.call(iterable, i)) {
							next.value = iterable[i]
							next.done = false
							return next
						}
					}
  
					next.value = undefined
					next.done = true
  
					return next
				}
  
				return next.next = next
			}
		}
  
		// Return an iterator with no values.
		return { next: doneResult }
	}
	exports.values = values
  
	function doneResult() {
		return { value: undefined, done: true }
	}
  
	Context.prototype = {
		constructor: Context,
  
		reset: function(skipTempReset) {
			this.prev = 0
			this.next = 0
			// Resetting context._sent for legacy support of Babel's
			// function.sent implementation.
			this.sent = this._sent = undefined
			this.done = false
			this.delegate = null
  
			this.method = 'next'
			this.arg = undefined
  
			this.tryEntries.forEach(resetTryEntry)
  
			if (!skipTempReset) {
				for (var name in this) {
					// Not sure about the optimal order of these conditions:
					if (name.charAt(0) === 't' &&
                hasOwn.call(this, name) &&
                !isNaN(+name.slice(1))) {
						this[name] = undefined
					}
				}
			}
		},
  
		stop: function() {
			this.done = true
  
			var rootEntry = this.tryEntries[0]
			var rootRecord = rootEntry.completion
			if (rootRecord.type === 'throw') {
				throw rootRecord.arg
			}
  
			return this.rval
		},
  
		dispatchException: function(exception) {
			if (this.done) {
				throw exception
			}
  
			var context = this
			function handle(loc, caught) {
				record.type = 'throw'
				record.arg = exception
				context.next = loc
  
				if (caught) {
					// If the dispatched exception was caught by a catch block,
					// then let that catch block handle the exception normally.
					context.method = 'next'
					context.arg = undefined
				}
  
				return !! caught
			}
  
			for (var i = this.tryEntries.length - 1; i >= 0; --i) {
				var entry = this.tryEntries[i]
				var record = entry.completion
  
				if (entry.tryLoc === 'root') {
					// Exception thrown outside of any try block that could handle
					// it, so set the completion value of the entire function to
					// throw the exception.
					return handle('end')
				}
  
				if (entry.tryLoc <= this.prev) {
					var hasCatch = hasOwn.call(entry, 'catchLoc')
					var hasFinally = hasOwn.call(entry, 'finallyLoc')
  
					if (hasCatch && hasFinally) {
						if (this.prev < entry.catchLoc) {
							return handle(entry.catchLoc, true)
						} else if (this.prev < entry.finallyLoc) {
							return handle(entry.finallyLoc)
						}
  
					} else if (hasCatch) {
						if (this.prev < entry.catchLoc) {
							return handle(entry.catchLoc, true)
						}
  
					} else if (hasFinally) {
						if (this.prev < entry.finallyLoc) {
							return handle(entry.finallyLoc)
						}
  
					} else {
						throw new Error('try statement without catch or finally')
					}
				}
			}
		},
  
		abrupt: function(type, arg) {
			for (var i = this.tryEntries.length - 1; i >= 0; --i) {
				var entry = this.tryEntries[i]
				if (entry.tryLoc <= this.prev &&
              hasOwn.call(entry, 'finallyLoc') &&
              this.prev < entry.finallyLoc) {
					var finallyEntry = entry
					break
				}
			}
  
			if (finallyEntry &&
            (type === 'break' ||
             type === 'continue') &&
            finallyEntry.tryLoc <= arg &&
            arg <= finallyEntry.finallyLoc) {
				// Ignore the finally entry if control is not jumping to a
				// location outside the try/catch block.
				finallyEntry = null
			}
  
			var record = finallyEntry ? finallyEntry.completion : {}
			record.type = type
			record.arg = arg
  
			if (finallyEntry) {
				this.method = 'next'
				this.next = finallyEntry.finallyLoc
				return ContinueSentinel
			}
  
			return this.complete(record)
		},
  
		complete: function(record, afterLoc) {
			if (record.type === 'throw') {
				throw record.arg
			}
  
			if (record.type === 'break' ||
            record.type === 'continue') {
				this.next = record.arg
			} else if (record.type === 'return') {
				this.rval = this.arg = record.arg
				this.method = 'return'
				this.next = 'end'
			} else if (record.type === 'normal' && afterLoc) {
				this.next = afterLoc
			}
  
			return ContinueSentinel
		},
  
		finish: function(finallyLoc) {
			for (var i = this.tryEntries.length - 1; i >= 0; --i) {
				var entry = this.tryEntries[i]
				if (entry.finallyLoc === finallyLoc) {
					this.complete(entry.completion, entry.afterLoc)
					resetTryEntry(entry)
					return ContinueSentinel
				}
			}
		},
  
		'catch': function(tryLoc) {
			for (var i = this.tryEntries.length - 1; i >= 0; --i) {
				var entry = this.tryEntries[i]
				if (entry.tryLoc === tryLoc) {
					var record = entry.completion
					if (record.type === 'throw') {
						var thrown = record.arg
						resetTryEntry(entry)
					}
					return thrown
				}
			}
  
			// The context.catch method must only be called with a location
			// argument that corresponds to a known catch block.
			throw new Error('illegal catch attempt')
		},
  
		delegateYield: function(iterable, resultName, nextLoc) {
			this.delegate = {
				iterator: values(iterable),
				resultName: resultName,
				nextLoc: nextLoc
			}
  
			if (this.method === 'next') {
				// Deliberately forget the last sent value so that we don't
				// accidentally pass it on to the delegate.
				this.arg = undefined
			}
  
			return ContinueSentinel
		}
	}
  
	// Regardless of whether this script is executing as a CommonJS module
	// or not, return the runtime object so that we can declare the variable
	// regeneratorRuntime in the outer scope, which allows this module to be
	// injected easily by `bin/regenerator --include-runtime script.js`.
	return exports
  
}(
	// If this script is executing as a CommonJS module, use module.exports
	// as the regeneratorRuntime namespace. Otherwise create a new empty
	// object. Either way, the resulting object will be used to initialize
	// the regeneratorRuntime variable at the top of this file.
	typeof module === 'object' ? module.exports : {}
))
//  export {regeneratorRuntime}